@renderme~ Welcome to the forum. It's become clear that all the Watchtower CAN do is speculate. My personal belief is that Jesus was speaking of the heavenly resurrection and not an earthly one. Your scenario of Adam and Eve doesn't make sense...simply because it seems they would have HAD to sin in order to feel "lustful" and bear children. Therefore, that makes Jehovah an unloving god who set them up for failure. He told them to "fill the earth and subdue it", yet if they didn't have sexual desires before being ousted from the Garden of Eden, then he was COUNTING on their failure in order for them to accomplish the task he set before them. Thus, we were never MEANT to be perfect, and therefore Paradise was not part of god's original plan, nor is the "Issue of Sovereignty" the REAL issue at play. So, when you consider Watchtower theology against your scenario, the two don't mesh.
As for 1 Corinthians, well... To be honest, that reads just as you read it. So it speaks of a heavenly resurrection. There is no in-between. The last creatures who were claimed to have come from a combination of human and the supernatural...were Nephilim. And we all know what supposedly happened to them.
Again, welcome... Stick around, there are lots of topics and brain-picking that go on here. I've learned quite a lot in my time here.